| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 746.17 | USD | 20250908 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 745.81 | USD | 20250907 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 745.81 | USD | 20250906 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 745.54 | USD | 20250902 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 745.72 | USD | 20250901 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 746.16 | USD | 20250830 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 746.16 | USD | 20250829 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 745.82 | USD | 20250828 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 745.82 | USD | 20250828 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 745.35 | USD | 20250827 |